Image Collage Maker

This maker uses one consistent square cell size throughout the collage. It does not create a freeform canvas or a mixed-size mosaic. That predictable structure makes it useful for contact sheets, before-and-after comparisons, product collections and simple social posts.

Starting points for the column count

The actual canvas size is calculated from the number of columns, the automatically determined rows, the cell size and the gap around every cell. To keep browser memory under control, the guided flow reduces the effective cell size when necessary so neither side of the collage exceeds 2400 pixels.

Cover or Contain

• Cover fills every square. Parts of a portrait or landscape image may be cropped equally from opposite sides.
• Contain keeps the entire image visible. Any unused area in the square is painted with the selected background colour.

Because the export is JPG, transparent areas in PNG or WebP sources are also flattened onto the chosen background.

Practical tips

• Put the most important photo first because the grid fills from left to right, then top to bottom.
• Use a small gap for a continuous contact-sheet look and a larger gap when each image should read separately.
• If faces sit close to an edge, use Contain to avoid an automatic centre crop.
• Lower JPG quality for a smaller sharing file; raise it when fine texture matters.

The source images, settings and generated JPG are processed locally. In the guided flow, the selected files are kept in this browser’s storage only so they can survive the step-to-step page changes; they are not placed in the URL or sent to our servers.